/Engine/Source/Runtime/SlateCore/Public/Types/Attributes/SlateAttributeContained.inl
template<typename InObjectType, typename InInvalidationReasonPredicate, typename InComparePredicate> struct TSlateContainedAttribute : public [SlateAttributePrivate::TSlateAttributeBase< ISlateAttributeContainer, InObjectType, InInvalidationReasonPredicate, InComparePredicate, ESlateAttributeType::Contained >](API\Runtime\SlateCore\Types\Attributes\TSlateAttributeBase)